Reel oven



1,505,316 w. w. CUMMINGS REEL OVEN Filed June 25. 1921 Patented Aug. 19, 1924.

UNITED STATES MENT riot.

REEL OVEN.

Application filed. June 25, 1921. Serial No. 480,317.

To all whom it mayconcern:

Be 1t known that I, WILLIAM WARREN CUMMINGS, a citizen of the United States,

residing at Hanover, in the'county of Grafton, in the State of New Hampshire, have in vented a new and useful Improvement in Reel Ovens, of which the following is the specification.

This invention relates to that type of ovens used for baking, drying, or similar purposes, in which the articles to be baked or dried are placed on shelves which are pivotally mounted upon a rotatable reel.

The object of this invention is to provide a simple, compact apparatus which is so constructed that the shelves will be held rigidly in a horizontal position at all times during the rotation of the reel.

Another object of the invention is to -pro-- vide a central heat reservoir so that the oven will not cool down excessively when articles are being removed therefrom or placed therein and which will heat up rapidly after being loaded.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings Figure 1 is a sectional plan of an oven embodying my invention, the same being broken away to save space in the drawings.

Fig. 2 is an end elevation of the same as viewed from the right of Figure 1, also broken away.

Fig. 3 is a sectional elevation taken on line 83, Figure 1. I

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 is the casing of the oven. 6 is an electric motor supported upon the casing. 7 is a pulley connected to a pulley 8 on the electric motor by a belt 9. The pulley 7 is fastened to a shaft 10 and a pulley 11 is also fastened tothe shaft 10 and is connected by a belt 12 to another pulley 13 which is fastened to a shaft 14 rotatably mounted upon the frame of the machine and having a gear 15 fast thereto which meshes into a gear 16 fast to a shaft 17, which is rotatably mounted upon the frame of the machine. The shaft 17 has a shelf carrier 18 fastened thereto and upon this shelf carrier is rotatably mounted a series of shafts 19 constituting pivots. A shelf 20 is fastened to each of these pivots respectively and to each of said pivots is also fastened a pinion 21. The pinions 21 each mesh into a gear 22 which in turn is fastened to asleeve 23, rotatably mounted upon the shaft 17 and having a gear 241 fast thereto which meshes into apinion 25 fast to the shaft 1 1.

A hollow cylindricalmember 26 is fastened to the shelf carrier 18 and rotates with it.

28in a manner wellknown to those skilled in the art and a bafile plate 29 is provided to protect the'burner from any "liquid or materi'althat may drop from the shelves or from any condensation thatmay occur in the oven. 1X drip pan 30 is provided to conduct any of the said liquid out of the oven. This drip pan may discharge into a pail or anyother suitable receptacle.

It will be understood that the shelves of the oven are supported at the ends thereof opposite to the ends shown in the drawings, Figure 1, by another shelf carrier approximately the same as the shelf carrier 18, in a manner usual in ovens of this class, but not shown in the drawingson account of the drawings being broken away.

The general operation of the apparatus hereinbefore described is as follows: The pulleys 7, 8, 11 and 13 are rotated by the electricmotor 6. The pulley 13 rotates the shaft 14 which in turn rotates the gear 15 fast thereto and meshing into the gear 16, which being fastened to the shaft 17 rotates said shaft together with the shelf carriers. The shelf carrier 18 has mounted thereon, as hereinbefore described, the series of shelves 20 and also the gears 21 which are fastened to the shelves through the pivots 19. It will therefore be seen that as the shelf carrier rotates it will carry with it the pivots 19, the shelves 20 and the gears 21, and that consequently the shelves revolve about, the shaft 17 and are rotated about their respective axes by reason of the gears 21 meshing into the gear 22.

The gear 22 is made of such a pitch diameter relatively to the pitch diameters of the different gears 21 and is rotated in such a direction and at such speed as to cause the shelves to always remain in a hori- This hollow cylinder is provided with a small vent 27 to allow for expansion or,

zontal position. For example, assuming the shaft 17 to be rotated in a clockwise directionthe shelf carrier will also rotate in a clockwise direction and the gear 22 will also be rotated in a clockwise direction which will cause the pinions 21 to be rotated in a counterclockwise direction to a sufficient extent due to the relative proportions of the gear 22 to the pinions 21 to maintain the shelves 20 in a horizontal position and said shelves will be locked in this position by the pinions 21 meshing into the gear 22.

It will beevident that while the oven is being used, the air in the heat reservoir 26 will become heated and will thus constitute a. reservoir of heat to enable the oven to be more quickly brought to a desired degree of temperature after the shelves have been loaded and the apparatus has again been put into operation.

I claim:

1. An oven having, in combination, a shaft, means to rotate said shaft, a shelf carrier fast to said shaft, a pivot rotatably mounted on said shelf'carrier, a shelf fast to said pivot, a pinion fast to said pivot, a sleeve rotatably mounted on said shaft, a gear fast to said sleeve and meshing into said pinion and means to rotate said sleeve, whereby said shelf may at all times be locked in a horizontal position.

2. An oven having, in combination, a

'3. An oven -.having, in combination, a

shaft, means to rotate said shaft, a shelf carrier fast to said shaft, a shelf rotatably mounted upon said shelf carrier, a pinion rigidly connected tosaid shelf, a gear rotatably mounted upon said shaft and meshing into said pinion and'means to rotate said gear whereby said shelf may at all times be locked in a horizontal position.

4. An oven having, in combination, a shaft, means torotate said shaft, a shelf carrier fast to said shaft, a series of shelves rotatably mounted upon said shelf carrier and concentric with said shaft, a series of pinions rigidly connected to said shelves, a gear rotatably mounted upon said shaftand meshing into said pinions and means to rotate said gear whereby said shelves may at all'times be locked in a horizontal position.

In testimony whereof I have signed my name to this specification.

WILLIAM WARREN CUMMINGS. 

